Onion (Allium cepa L.) is a crucial bulb crop cultivated globally. India is one of the major producers of onion. The quality and yield are significantly affected due to seed-related problems, viz., poor viability, low germination rates, and seed-borne diseases. Improper storage also adds to the above issues. Overwatering affects seed germination, whereas purple blotch and downy mildew impair seed quality. Proper bulb choice and planting schedules can make a big difference in production. Seed priming and integrated pest management improve the seed quality. Higher yields can be obtained by growing climateresilient varieties and adopting innovative seed treatment methods. These measures can improve onion seed quality and increase overall crop yield significantly.